Road slope drainage system
By setting up a combined drainage system of drainage wells and vertical and horizontal pipes on the road slope, the problems of traditional highway drainage systems being difficult to design, occupy a lot of land and cost in urban sections are solved, and an efficient and economical drainage solution is achieved.
Patent Information
- Application Number
- CN202422131605.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Traditional highway subgrade pavement drainage systems have problems such as severe terrain, occupancy of a lot of land and high cost in the construction of adjacent urban sections. Especially when land use is limited in urban built-up areas and planned areas, it is difficult to design.
A highway slope drainage system is adopted, including drainage wells, transverse pipes and longitudinal pipes. By setting up drainage wells on the curbs where the road surface is connected to the sidewalk, a combination of longitudinal pipes and transverse pipes is used to form a complete drainage system, reducing dependence on natural water systems and optimizing the land layout.
It has achieved an efficient drainage system under limited natural water system effluent and land use conditions, which has reduced engineering cost and reduced land occupation.
Smart Images
Figure CN223135288U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of highway drainage systems, and particularly relates to a highway slope drainage system. Background Technique
[0002] At present, the surface drainage project of the highway boundary in the section near towns generally consists of a road surface drainage system and a roadbed drainage system, and most of them do not have a rain and sewage pipe drainage system. Among them, the road surface drainage system drains the rainwater in the central isolation belt and the rain and sewage on the road surface into the roadbed drainage system, and then the roadbed drainage system discharges it out of the highway boundary and into the natural water system.
[0003] The road surface drainage system is composed of a central isolation belt drain pipe, a blind ditch, a super-elevation drainage ditch, a road surface cross slope (or super-elevation), and a shoulder water retaining belt, etc. The roadbed drainage system is composed of a side ditch, a drainage ditch, a catchment ditch, a platform drainage ditch, a chute, etc. After the road surface drainage system collects the rainwater in the central isolation belt and the rain and sewage on the road surface, it discharges the water into the side ditch and the drainage ditch; the catchment ditch, the platform drainage ditch, and the chute collect the rainwater on the slope and then discharge it into the side ditch and the drainage ditch.
[0004] The way for the side ditch and the drainage ditch to discharge rain and sewage is gravity flow, that is, the bottom of the side ditch and the drainage ditch needs to be set with a longitudinal slope along a certain direction, and the rain and sewage flow along the longitudinal slope descending direction. If not intervened, the bottom elevation of the drainage ditch is set according to the original terrain, but the original terrain is mostly undulating, resulting in the undulating bottom elevation of the drainage ditch. Therefore, generally, in order to prevent the drainage ditch from accumulating water, it is necessary to appropriately adjust the bottom elevation of the drainage ditch during the roadbed drainage design, so that the longitudinal slope of the bottom of the drainage ditch is set along a certain direction until the drainage ditch is connected to the adjacent natural water channels, rivers, ponds and other water systems at the lowest point of the bottom elevation of the drainage ditch in this section to form a complete drainage system.
[0005] However, in engineering practice, the construction conditions of the highway in the section near towns are complex, the built-up area and the planned area of the town are large, the highway land is narrow, and it is difficult to set the drainage ditch along the terrain at the toe of the embankment slope. There are the following problems in draining water according to the traditional drainage system:
[0006] (1) Heavily dependent on terrain and natural surface water systems. The drain of the embankment uses gravity flow, and water flows along the longitudinal slope direction of the bottom of the ditch, which makes the elevation of the bottom of the ditch seriously affected by the terrain. Generally, for field roads, through appropriate artificial intervention, the elevation of the bottom of the ditch can be reduced or raised to form a one-way longitudinal slope towards the water outlet point for drainage. However, the longitudinal slope of the bottom of the ditch cannot be adjusted infinitely. Generally, it should be ≥0.3%, and in difficult cases, it should be ≥0.1%. Therefore, the design of the drainage ditch often cannot conform to the terrain and landform, and it is necessary to connect the roadbed drainage system to the natural surface water system by adding lateral water outlet points, setting more off-line diversion ditches, or adding more lateral drainage culverts. This is contradictory to the situation that the original terrain in urban built-up areas and planned areas has mostly been changed, especially the natural water systems near the outskirts of towns have mostly been filled.
[0007] (2) Occupies more land. The size of the drainage ditch is generally not less than 60cm×60cm, and it is cast in-situ or precast with plain concrete, and the wall thickness is ≥20cm. Therefore, the land occupation width of the drainage ditch is ≥100cm. Especially when adding facilities such as diversion ditches, more land needs to be occupied, which is contradictory to the limited land use in urban built-up areas and planned areas.
[0008] (3) Higher project cost. The size of the drainage ditch is generally not less than 60cm×60cm, and it is cast in-situ or precast with plain concrete. The plain concrete consumption per linear meter of the drainage ditch is ≥0.44m3. In addition, diversion ditches and lateral drainage culverts need to be added, and the project scale is large.
[0009] The above traditional roadbed and pavement drainage system is heavily dependent on terrain, occupies more land and has a higher cost, which has certain contradictions with the development of urban built-up areas and planned areas, and the design difficulty is relatively large. To solve the above problems, a highway slope drainage system is proposed. Utility Model Content
[0010] To solve the above problems in the prior art, the present utility model provides a highway slope drainage system, which can reasonably utilize fewer natural water system water outlet points to form a complete drainage system.
[0011] The present utility model adopts the following technical solutions:
[0012] A highway slope drainage system includes a drainage well, a horizontal pipe, a longitudinal pipe and a base; the drainage well is arranged at the curb where the highway pavement is connected to the sidewalk; the base is embedded in the slope; the longitudinal pipe is arranged on the base, and the longitudinal pipe is longitudinally arranged along the advancing direction of the highway; one end of the horizontal pipe is connected to the drainage well, and the other end is connected to the longitudinal pipe; the longitudinal pipe is provided with several sections, and several sections of the longitudinal pipe are interconnected and finally conducted to the rain and sewage water outlet point.
[0013] Further, the drainage well is a brick-built vertical grate single-grate rainwater inlet.
[0014] Furthermore, after the transverse pipe is installed, the transverse pipe has a slope, which descends from the end connected to the drainage well to the end connected to the longitudinal pipe.
[0015] Furthermore, the tube body of the transverse tube is coated with concrete.
[0016] Furthermore, the concrete with the transverse tube has a structural cross-section that is square.
[0017] Furthermore, the base is a plain concrete base; the plain concrete base is provided with a concave arc portion adapted to the longitudinal tube body.
[0018] Furthermore, the longitudinally adjacent longitudinal tubes are connected via elastic sealing ring type sockets.
[0019] Furthermore, along the direction of the highway, a drainage well is arranged at a set interval; correspondingly, along the direction of the highway, a transverse pipe is arranged at a set interval.
[0020] Furthermore, the transverse tube is connected to the longitudinal tube via a tee.
[0021] Furthermore, the transverse pipe and the longitudinal pipe are both PVC-U drainage pipes.
[0022] Compared with the prior art, the beneficial effects of the utility model are:
[0023] The utility model provides a highway slope drainage system, which is suitable for situations where the drainage ditch of the highway embankment set up by gravity flow is not well drained, the natural surface water system is scarce or the land use is limited, etc., near towns and cities; when there is road water, the road water (rainwater, sewage from washing the road surface) flows along the transverse slope of the road surface into the curb where the road surface and the sidewalk meet, flows along the longitudinal slope of the curb according to gravity flow, and flows into the drainage well. Thereafter, the road water will be discharged from the road system according to the following path: drainage well → transverse pipe → longitudinal pipe → natural ditch, river. Thus, a brand new highway slope drainage system is formed. Through this drainage system, fewer natural water outlets can be reasonably utilized to form a complete drainage system. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The technology of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments:
[0025] Figure 1 It is a plan layout diagram (partial schematic diagram) of the drainage well, transverse pipe, reducing tee and longitudinal pipe of the utility model;
[0026] Figure 2 yes Figure 1 Schematic diagram of cross section (partial schematic diagram);
[0027] Figure 3 It is a schematic cross-sectional view of the concrete-wrapped horizontal pipe;
[0028] Figure 4 It is a schematic cross-sectional view of the base;
[0029] Figure 5 It is a schematic cross-sectional view when the longitudinal pipe is placed on the base.
[0030] Reference numerals:
[0031] 1 - Drain well;
[0032] 2 - Horizontal pipe; F1 - First outer edge of the pipe side; F2 - Second outer edge of the pipe side; F3 - Top outer edge; F4 - Bottom outer edge;
[0033] 3 - Longitudinal pipe;
[0034] 4 - Base; 41 - Concave arc part; R - Semicircle; K1 - First end point; K2 - Second end point; K3 - Bottom end point; M1 - First side edge; M2 - Second side edge; M3 - Bottom;
[0035] 5 - Concrete; G1 - First side edge; G2 - Second side edge; G3 - Top; G4 - Bottom;
[0036] 6 - Reducing tee;
[0037] A - Driving lane; A1 - Road surface; B - Curb strip; C - Sidewalk; D - Slope; E - Original ground; i - Gradient; W - Width; H - Height; N - Cross-section; P1 - First side; P2 - Second side. Detailed implementation manners
[0038] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, solution and effects of the present utility model. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The same reference numerals used in the drawings indicate the same or similar parts everywhere.
[0039] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right, etc. descriptions used in the present utility model are only relative to the mutual positional relationship of the components of the present utility model in the drawings.
[0040] Refer to Figures 1 to 5, A highway slope drainage system, comprising a drainage well 1, a transverse pipe 2, a longitudinal pipe 3 and a base 4; the drainage well 1 is arranged at the curb B where the highway pavement A1 meets the sidewalk C; the base 4 is embedded in the slope D; the longitudinal pipe 3 is arranged on the base 4, and the longitudinal pipe 3 is longitudinally arranged along the advancing direction of the highway; one end of the transverse pipe 2 is connected to the drainage well 1, and the other end is connected to the longitudinal pipe 3; the longitudinal pipe 3 is provided with several sections, and several sections of the longitudinal pipe 3 are interconnected and finally conduct to the rain and sewage outlet point. Among them, when the longitudinal pipe 3 is longitudinally arranged, the water head is adjusted by adjusting the elevation of the longitudinal pipe, thereby realizing the height difference, making the longitudinal pipe 3 have a slope, which is beneficial to the drainage of the longitudinal pipe 3; through several sections of the longitudinal pipe 3, the longitudinal drainage distance can be increased, and the rainwater can be longitudinally discharged along the road to the rain and sewage outlet point, and finally connected to the natural water channel and river. The utility model can preferably solve the problem of highway pavement water drainage in sections where the drainage of the drainage ditch near the town is difficult, has a simple structure, good safety and convenient maintenance.
[0041] Refer to Figures 1 to 5 , In one embodiment, the drainage well 1 is a brick-built vertical grate single-grate rainwater inlet.
[0042] Refer to Figure 1 and Figure 2 , In one embodiment, after the transverse pipe 2 is installed, the transverse pipe 2 has a slope i, and slopes down from the end connected to the drainage well 1 to the end connected to the longitudinal pipe 3. Preferably, the slope i is set to 1% here.
[0043] Refer to Figures 1 to 3 , In one embodiment, the pipe body of the transverse pipe 2 is coated with concrete 5. The concrete 5 is C20 concrete, that is, it is obtained by cast-in-place C20 concrete.
[0044] Refer to Figures 1 to 3 , In one embodiment, the concrete 5 with the transverse pipe 2 has a square cross-section. The size of the square cross-section is that the width W is 40 cm and the height H is 35 cm. The transverse pipe 2 wrapped is a DN200mm PVC-U drainage pipe. The outer edge F1 of the first pipe side of the transverse pipe 2 is 10 cm away from the first side edge G1 of the concrete 5, the outer edge F2 of the second pipe side of the transverse pipe 2 is 10 cm away from the second side edge G2 of the concrete 5, the outer edge F3 of the top of the transverse pipe 2 is 15 cm away from the top G3 of the concrete 5, and the outer edge F4 of the bottom of the transverse pipe 2 is flush with the bottom G4 of the concrete 5. Among them, "DN" is the nominal diameter.
[0045] Refer to Figures 1 to 5, in one embodiment, the base 4 is a plain concrete base; a concave arc portion 41 adapted to the body of the longitudinal pipe 3 is provided on the plain concrete base; during installation, the longitudinal pipe 3 is placed on the concave arc portion 41 of the plain concrete base. Preferably, the plain concrete base is a C20 concrete base, that is, it is cast in place with C20 concrete. The width W of the cross-section of the plain concrete base is 51.5 cm, the height H is 25 cm, and in the middle is a semi-circle R with a diameter of 31.5 cm. The first end point K1 of the semi-circle R is 15 cm away from the first side edge M1 of the plain concrete base, the second end point K2 of the semi-circle R is 5 cm away from the second side edge M2 of the plain concrete base, and the bottom end point K3 of the semi-circle R is 9 cm away from the bottom M3 of the plain concrete base (9.25 cm is rounded to 9 cm).
[0046] In one embodiment, the longitudinally adjacent longitudinal pipes 3 (except those connected by tees) are connected by elastic sealing ring type socket joints.
[0047] Refer to Figure 1 , in one embodiment, along the forward direction of the road, a drainage well 1 is provided at every set spacing; correspondingly, along the forward direction of the road, a transverse pipe 2 is provided at every set spacing.
[0048] Refer to Figure 1 and Figure 2 , in one embodiment, the transverse pipe 2 is connected to the longitudinal pipe 3 through a tee.
[0049] Refer to Figure 1 and Figure 2 , in one embodiment, the diameters of the transverse pipe 2 and the longitudinal pipe 3 are different, and the transverse pipe 2 is connected to the longitudinal pipe 3 through a reducing tee 6. Preferably, a 300 mm × 200 mm PVC-U drainage pipe reducing tee is used.
[0050] In one embodiment, both the transverse pipe 2 and the longitudinal pipe 3 are PVC-U drainage pipes. Preferably, the transverse pipe 2 is a PVC-U drainage pipe with a specification of DN200 mm; preferably, the longitudinal pipe 3 is a PVC-U drainage pipe with a DN315 mm.
[0051] In one embodiment, the cross-section N of the highway slope from the first side P1 to the second side P2 is respectively the carriageway A, the road margin B, the sidewalk C, the slope D and the original ground E; the road surface A1 of the carriageway A has a slope i, and the road surface of the sidewalk C also has a slope i; the slope ratio of the slope D is 1:1.5; Refer to Figures 1 to 5 , a method for installing a highway slope drainage system, comprising the following steps:
[0052] S1. Installation of the longitudinal pipe 3; specifically, the longitudinal pipe 3 is installed after the construction of the slope D is completed; preferably, the longitudinal pipe 3 is laid with a DN315mm PVC-U drainage pipe; the longitudinal pipe 3 consists of several sections, and the length of a single pipe section of the longitudinal pipe 3 is generally 6m. The pipe sections (except those connected by tees) are connected by an elastic sealing ring socket; preferably, the longitudinal pipe 3 is supported on the roadbed slope D by a C20 concrete base. According to the elevation of the longitudinal pipe 3 specified in the design, the C20 concrete base is pre-cast, and then the longitudinal pipe 3 and the reducing tee 6 are installed.
[0053] S2. Installation of the drainage well 1; specifically, the drainage well 1 is installed before the start of the road surface cushion construction; preferably, a drainage well 1 is set every 24m, corresponding to the position of the reducing tee 6 set in step S2 and the position of the transverse pipe 2 to be set in step S3.
[0054] S3. Installation of the transverse pipe 2; specifically, the transverse pipe 2 is installed after the construction of the longitudinal pipe 3 and the drainage well 1 is completed and before the start of the sidewalk C road surface construction; preferably, a transverse pipe 2 is set every 24m, connecting it to the corresponding drainage well 1 and reducing tee 6.
[0055] S4. Wrapping the transverse pipe 2 with concrete 5; specifically, after the installation of the transverse pipe 2 is completed, the transverse pipe 2 is wrapped with concrete 5 during construction.
[0056] The present utility model has the following technical advantages:
[0057] (1) The longitudinal pipe 3 of the present utility model is arranged along the embankment slope D, which can preferably set the hydraulic gradient, extend the drainage path, drain the road surface water into fewer natural water systems along the line, and preferably solve the problem that the highway drainage seriously depends on the terrain and the surface natural water system, making the highway drainage facilities more adaptable to the topographic and geomorphic conditions of the sections near towns.
[0058] (2) The transverse pipe 2 of the present utility model is arranged under the sidewalk C, and the longitudinal pipe 3 is arranged within the scope of the slope D, without increasing the land use outside the slope D, reducing the land occupation.
[0059] (3) The drainage well 1 and the transverse pipe 2 of the present utility model are essential facilities for the drainage project of the sidewalk section. The transverse pipe 2, the longitudinal pipe 3, and the base 4 for the longitudinal pipe have a small project scale, reducing the project cost.
[0060] For other contents of the highway slope drainage system described in the present utility model, reference may be made to the prior art and will not be elaborated herein.
[0061] The above are only the preferred embodiments of the present utility model, and do not impose any formal restrictions on the present utility model. Therefore, any modifications, equivalent changes, and decorations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims
1. A highway slope drainage system, characterized in that, It includes a drainage well, a transverse pipe, a longitudinal pipe and a base; the drainage well is arranged at the curb where the highway pavement meets the sidewalk; the base is embedded in the slope; the longitudinal pipe is arranged on the base and is longitudinally arranged along the advancing direction of the highway; one end of the transverse pipe is connected to the drainage well and the other end is connected to the longitudinal pipe; the longitudinal pipe is provided with several sections, and the several sections of the longitudinal pipe are interconnected and finally lead to the rain and sewage outlet point.
2. The highway slope drainage system according to claim 1, characterized in that, The drainage well is a brick-built vertical grate single-grate rainwater inlet.
3. The highway slope drainage system according to claim 1, characterized in that, After the transverse pipe is installed, the transverse pipe has a slope, sloping down from the end connected to the drainage well to the end connected to the longitudinal pipe.
4. The highway slope drainage system according to claim 1, characterized in that, The pipe body of the transverse pipe is coated with concrete.
5. The highway slope drainage system according to claim 4, characterized in that, The concrete with the transverse pipe has a square cross-section in structure.
6. The highway slope drainage system according to claim 1, characterized in that, The base is a plain concrete base; a concave arc portion adapted to the pipe body of the longitudinal pipe is provided on the plain concrete base.
7. The highway slope drainage system according to claim 1, characterized in that, Adjacent longitudinal pipes in the longitudinal direction are connected by an elastic sealing ring type socket.
8. The highway slope drainage system according to claim 1, characterized in that, Along the advancing direction of the highway, a drainage well is set at every set interval; correspondingly, along the advancing direction of the highway, a transverse pipe is set at every set interval.
9. The highway slope drainage system according to claim 1, characterized in that, The transverse pipe is connected to the longitudinal pipe through a tee.
10. The highway slope drainage system according to any one of claims 1 to 9, characterized in that, Both the transverse pipe and the longitudinal pipe are PVC-U drainage pipes.